<!DOCTYPE html>
<html>
<body>
<input id="input0" aria-label="input0" role="textbox">
<input id="input1" aria-label="input1" role="textbox" aria-multiline="true">
<input id="input2" aria-label="input2" role="textbox" aria-multiline="true">
<input id="input3" aria-label="input3" role="textbox">
<script>
  function go() {
    // Set aria-multiline from default false->false; should not fire an event.
    document.getElementById('input0').setAttribute('aria-multiline', 'false');

    // Set aria-multiline from true->false; should fire an event.
    document.getElementById('input1').setAttribute('aria-multiline', 'false');

    // Set aria-multiline from true->[removed]; should fire an event.
    document.getElementById('input2').removeAttribute('aria-multiline');

    // Set aria-multiline from false->true; should fire an event.
    document.getElementById('input3').setAttribute('aria-multiline', 'true');
  }
</script>
</body>
</html>
